Improvement in hulling-machines



l W. PORTER.

Cotton. Seed HUBS-. A NQ.102 ,152. Patented Api 1&9', 18?@ waited tatra@anni dtjijii.

WILLIAM PORTER, OF BROOKLYN, NEW YORK.

Letters Patent No. 102,152, fla-ted April 19, 1870.

IMPROVEMENT IN HULLING-MACHINBS.

The Schedule referred to in these Letters Patent amd'making part of thesame.

ings making a part of this specification, in which- Figure 1 isalongitudinal section and elevation; and Figure. 2, at-ransverse sectionof the revolving cyl inder.

'lo enable others skilled in the art tornake and use my invention, Iwill proceed to describe its construction and operation, by theaid ofthe drawings and letters of reference marked thereon.

A is the revolving cylinder, which is usually made of cast-iron, throughwhich aspindle is insertedl to vform its axis.

B B are grooves cut out the length ofthe ylinder.

O O are steel knives.

D D are the backers.

F F are the. regulators. y

The height orset of the knives is regulated by the adj Listing-screws EE.

The bolts G G hold the backers and regulators firmly to the cylinder. y

The operation of my invention will now be readily understood. The steelknives O O are placed in the regulators; then the adjusting-screws E Eare set so asV to raise the edges of the knives to any required set. Theregulators are then placed in the grooves B B of the cylinder, thebackers are inserted, and the bolts G G are screwed tight, thus firmlyholding the knives. The cylinder is now ready for use.

I do not confine myself to the precise fortns of the parts which I haverepresented. I may dispense with the regulators F F, and screw boltsinto the cylinder,

having collars or nuts, between which an eye having a point toprojectpiuto the knives may be inserted, which will raise and lower theknives O O; or the saine device may be appliedto the regulators F F orhackers D D; or the knife may be raised by means of inclined planes orwedges-or eccentric-headed pins; or I may insert tapped eyes into theknives, and by l means of bolts from outside the cylinder raise or lowerthe knives.

Some of the advantages due to my improvements may be enumerated asfollows: First. The facility with which any amount of set can Abe givento the knives;

Second. The ease and rapidity with which the knives can be changed. v

Third; In practice one end of the knives is worn awa-y more than theother. By my improved adjustnient the worn end can he raised to theproper set.

Fourth'. Ihe knives can'be properly sharpened and set in the regulatorsaway from the hulling-rnachine.

I do not claim .as new a hacker holding a steel knife by means of pinsin the revolving cylinder of a hnlling-l'nnchine, as I am aware this hasbeen done before.

Having now fully described my invention,

What I 'cla-iin as new, and desire to secure by Letters Patent, is-

The arrangement of the regulators F F, backers D D, adjusting-screws EE, or their equivalents for regulating the set of the steel knives O Cin hailing-,cylinders, substantially and for the purpose described. y

' XVILLIAM PORTER.

Witnesses:

W. ARTHUR, J nur., ALnrt. T. ARTHUR.

